Oil cooling radiator



March 6, 1934. s l 1,950,211

01L COOLING RADIATOR 2 Sheets-Sheet 2 Filed Aug. 51, 1932 P INVENTOR...

Patented Mar. 6, 1934 OFFICE OIL COOLING RADIATOR Joseph Askin,

Buffalo, N. Y., assignor to Fedders Manufacturing Company, Inc., Buffalo, N. Y. Application August 31, 1932, Serial No. 631,179

4 Claims.

This invention relates to a radiator wherein heat exchange is efiected between a pair of circulating liquid streams, and it has particular reference to an oil cooling radiator for an automobile engine.

The invention comprehends a compact unit adapted to be readily interposed in the Water and oil circulation systems of an automotive engine, and containing a core formed with passages for oil and a cooling stream of water, the oil being directed therethrough at right angles to the water flow, and the water being directed from adjacent headers through the core in a return flow path. Additionally, the unit is devised to receive the entire output of a water pump and to direct the same to the engine block with a minimum of resistance during its oil cooling function. Other features of the invention, including the removability of the core for replacement, the novel form of oil line connections, and the general adaptability of the unit to economical mass production, are more fully set forth in the accompanying specification and drawings, wherein:

Fig. 1 shows the oil radiator unit positioned on the engine of an automotive vehicle which is illustrated diagrammatically.

, Fig. 2 is an enlarged front elevation of the unit with portions successively broken away to show the water and oil header construction.

Fig. 3 is a section on the line 33 of Fig. 2.

Fig. 4 is a cross-section on the line 44 of Fig. 3.

The radiator unit consists of a housing 10, the lower portion of which comprises a water manifold 11 formed with an input spud 12 adapted to receive a flexible input hose 13 leading from the discharge side of a water pump P (Fig. 1) and an adjacent water discharge passage 14 terminating in a flanged fitting 15 adapted to be secured to the water input connection 16 on the engine block B (Fig. 4). Both of these passages extend upwardly to an enlarged rectangular face 17, and terminate in a water input port 19 and water output port 21, divided by a, rib 18.

The upper portion of the housing 10 comprises a water jacket 22 which encloses the core hereinafter described, and which directs the water from the input to the output ports 19 and 21. The water jacket is preferably a rectilinear stamping having an annular flange 23 on its open face secured to a cooperating flange 24 on the manifold 11 by means of bolts 25. A gasket 26 is interposed between these flanges to provide a fluid tight joint.

A removable core 28 is mounted within the jacket 22 and its lower portion closely overlies the thus being directly positioned in the path This unit is fabricated of a plurality of tubes 29 formed with an enlarged hexagonal heads 31, which are arranged in banks with the heads thereof interfitting and soldered together, so that the spaces between the tubular portions of the tubes form transverse oil passages 32, and the passages within the tubes form vertical water passages 33. The end rows of tubes differ from the remaining tubes 29 in that they are formed with modified pentagonal heads 36, two of the sides of which are formed with an included angle of 120 degrees to interfit with the adjacent row of hexagonally headed tubes, and the remaining three sides of which are arranged at right angles to each other, so that the heads on the end face form planar pads as indicated by the numeral 37.

The core is completed by covering the side and end walls so that oil passages are isolated from the water passages. Such covering means comprise side plates 38 which are corrugated to fit the tube heads on the side faces of the tube bank, and which are soldered thereto.

The end faces of the tube unit are capped with oil headers 39 which are formed with upper and lower flange portions 41 soldered to the core pads 37, with angular flanges 42 extending around the cover plates 38, and secured thereto. Each header is centrally depressed to form a nut socket 43 wherein a threaded nut is received and secured by means of hard solder as indicated by the numeral 44.

The tube unit as above described is loosely received within the jacket 22 with its nut sockets 43 spaced from the end walls by means of gaskets 46, and it is secured to the jacket 22 by oil inlet and outlet nipples 47 which extend through holes 48 formed in the end walls of the jacket, and which are threaded into the nuts 45 in the oil headers 39. The nut sockets 43 and gaskets 46 are drawn into sealing relation with the end walls of the jacket by means of lock nuts 48 which are threaded on the nipples 47. Gasket washers 49 are interposed between the nuts 48 and the walls of the jacket to provide an exterior seal. The protruding ends of the studs are connected to an oil input conduit 51 and an oil output conduit 52 by means of suitable connecting fittings 53.

As shown in Fig. 1, the oil input conduit 51 extends to the oil pump of the engine and oil therefrom is directed into the left hand header 39 for disposal through the oil passages 32 to l to without departing from the right hand header 39, whence it is directed through the stud 47 and oil delivery conduit 52 to the working parts of the engine. Simultaneously, the discharge of the water pump P is directed through the passage 12 to the water input port 19, and thence through the water passages 33 of the tubes encompassed by such port to the upper portion of the jacket, where it is redirected downwardly through the remaining tubes of the bank to the output port 21 for direction into the water jackets of the motor block B through the flange connection and water inlet 15 and 16.

It will be noted that the entire output of the water pump is not solely directed through the water tubes, as it will be obvious that at higher pump speeds the excess volumes of water will be forced about the headers 39 directly into the output port 21 with a minimum of frictional resistance.

Apconvenient method of mounting the entire unit is found in the provision of a supporting bracket 51 having a flange portion 52 secured to the flange 23 of the jacket by two of the bolts 25, this bracket formed with an angular arm 53 terminating in an open slot 54 adapted to be entered under the head of a bolt 55 secured in the engine block B. This secures the upper portion of the unit against vibration while the bolts 56 of the flange connection 15 support the lower portions of the unit.

It will be understood that while the invention has been described with reference to a single em bodiment, various modifications may be resorted the principles thereof. I For example, the securing of the unit to the engine block by means of the bracket 51 and fitting 15 as above described, is illustrative of the application of the cooling unit to an engine, and obviously such arrangement may be varied in a number of manners involving changes in the form of the inlet and outlet passages of the water manifold 11 to suit other prevailing conditions, without departing from the scope of the invention as set forth in the appended claims.

I claim:

1. A heat exchange unit for cooling fluids comprising a housing, a core disposed within the housing and spaced from the walls thereof, header plates embracing said core at opposite ends, said header plates being formed with oiTset portions approaching the walls of said housing, securing studs extending from within said ofiset portions of said plates through said housing walls, and means disposed on said studs within said header plates and exteriorly of said housing for mounting said core in said housing.

2. In a radiator, a housing comprising a manifold member having adjacent inlet and outlet ports and a jacket member removably secured thereto and enclosing the ports thereof, a core formed with a plurality of water passages extending therethrough, said core being positioned over the ports of the manifold and being contained in said jacket member, said core being also formed with oil passages disposed transversely of the Water passages therein, oil input and output headers secured to the core at opposite sides thereof, and oil input and output fittings extending through opposite sides of the jacket member and removably securing the input and output headers to the adjacent walls of the jacket member.

3. In a radiator, a housing comprising a manifold member having adjacent inlet and outlet ports and a jacket member secured thereto and enclosing the ports thereof, a core formed with a plurality of water passages extending therethrough, said core being positioned with its water passages partially covering the ports of the manifold member and being received within and spaced from the walls of the jacket member, whereby water entering said jacket through the inlet port is directed in two streams to the outlet port, one stream flowing through the water passages to the outlet port and the remaining stream flowing directly through the jacket to the outlet port, said core being also formed with oil passages and oil inlet and outlet fittings extending through the jacket and communicating with the oil passages.

4. In a radiator, a housing having water inlet and outlet ports, a core in the housing formed with a plurality of water passages extending therethrough, said core being positioned with its water passages partially covering the ports of the housing and being otherwise spaced from the walls of the housing, whereby water entering said housing through the inlet port is directed in two streams to the outlet port, one stream flowing through the water passages to the outlet port and the remaining stream flowing directly through the housing to the outlet port, said core being also formed with oil passages and oil inlet and outlet fittings extending through the housing and communicating with the oil passages.

JOSEPH ASKIN. 

